Top definition
The mass of fat on very large woman or young girl, located between the stomach and twat. Women sporting twat biscuits usually wear very tight shirts, often so short that the tummy is exposed and flops about over the top of their twat biscuit and jeans.
"Wow, that woman has a spare tire AND a twat biscuit!"
by JKH82 February 02, 2010
Get the mug
Get a Twat Biscuit mug for your cat Larisa.
2
A person who is generally not liked.

Prone to ruining things, a twatbiscuit is never too far away.
"Hey Conor?"

"Yeah?"

"You're a twatbiscuit."
by E-dog January 10, 2013
Get the mug
Get a Twatbiscuit mug for your fish GΓΌnter.